Alright, let's work through 3161 times 2781 step by step
3161 × 2781 = 2781 × (3161)
+ 2781 × 1 that equals 2781
+ 2781 × 60 that results in 166860
+ 2781 × 100 that is equal 278100
+ 2781 × 3000 producing 8343000

= 8790741
